Electric-arc lamp.



Patented May-I4, 190|.

J. HEHRICHT.

ELECTRIC ARC LAMP. (Application filed Aug. 27, 1900.)

(Nn Model.)

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f UNITED STATES PATENT OFFICE JOHN HERRIOHT, OE CLEVELAND, OHIO.

ELECTRIC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 674,338, dated. May 14, 191.

Application filed August Z7, 1900. Serial No. 28,184:- (No model.)

To all whom it may oon/cern:

Be it known that I, JOHN HERRIOHT, a citizen of the United States, residing at Cleveland, in the county ofrCuyahoga and State of Ohio, have invented certainnew and 4useful Improvements in Arc-Lamps; and I do hereby declare the following to be a full, clear, and

exact description of the invention,such as will fective means for regulating the length of arci to be struck, together with a new form of clutch mechanism for controllingand rlifting the upper carbon during the striking of the arc, designed toobviatethe use of adash-pot for taking up the shock at the endof the armature travel, and other details of construction which combine to produce a'cheap and' durable lamp, reliable in its operation and easy to trim. Y n l Referring to the drawings, in which like vparts are'similarly designated, Figure -l is a section of my improved lamp; Fig. 2, a modiication of the carbon-lifting mechanism and vregulator for determiningl the lengthof arc t-o be struck; and Fig. 3 isa View, partly in section, of the inner globe or bottle-bracket.

The solenoid (indicated by lO) is providedV against which the case `(not shown) fits tightly,

eflectually preventing hot air from thearc from entering said caseand `vburning the insulator on the windings of th'espool. I pref,-

.- jerably makethe lower` head of the spool yof non-magnetic materiahas this has an advantage in reducing the heating of the spool and .besides prevents the concentration ofthe magnetism at this point andallows the arma.- ture to have an easy upward movement.t i

It will be observed that I have shown the conical and tapered head l1 as screwed on the body, so as to permit the increasing or decreasing of the distance apart of thetwo heads and allow a greater or :less number of winding action.

ings to loe placedpthereon, so that one structure will suffice for lamps to be Wound for one hundred and ten, two hundred and twenty, and five hundred Volts, while the conicity of the head gives a very satisfactory working variation inthe magnetism, which is greatest at the upper head.

Screwed or otherwise adj ustably held in the `upper end of the brass body l2 is the iron core 14, which is made adjustable therein for permitting a longer throw of the armature for different-sized arcs,and in this coreis screwed yor Otherwise adjustably held an iron upper- `carbon guide-tube 16,`preferably projecting some distance through the core 14 and provided with a lateral slot 17.in which the wire connected to the carbon-terminal has free motion during the feeding and adjustment of the carbon. I make this tube of iron and car-ry it below'the upper magnet-head, so that when the solenoid is energized said tube'will have a braking effect on the armature to aid in preventing the latter from being carried up so far l as to touch the core,and when properly adjustwhen rst llifted and then gradually permit it to move down. I have described this tube as 'made of iron, but itinay be made of brass when itis desired to do away with its brak'- In this tube is the carbon cap or terminal, comprising a split socket 53, fitting the end ofthe carbonand provided with a ball-an lsocket joint 54 and a .stirrup 55, sufficiently thickto prevent it from passing through the slot, and in which the terminal wire, is twisted. Y This mode of structure allows free turning of the carbon and decreases the` wear on the wire sliding in the slot.A

Thetubular armaturelS has vertical mortio'nuin the /vmagnet-body l2 and has secured to itslowerfend a v,f guide-tuloe 19, having a slot V20'c`ut therein, through which the clutch can gripf the upper carbon. `Alt`hough I have shown but one k'slot and rclutch,it is Obvious that I may make them in pairs. A

Secured to thearmature and moving with "itsguide-tube 15 is a pair of springs 2l 22,

preferably, though not necessarily, made of phosphor-bronze, bent inwardly, so as to bear one against the tube 19 and the other against the carbon, the free ends being then bent out- IOO wardly, I have shown one of these springs 21 provided with a jaw 23 at its bend, said jaw passing through the slot 2O in the guidetube 19 to grip the carbon with its arcuate face. The outwardly-bent ends of these two springs are guided vin and project through springs in'accordance with the strength of.-

the magnet, and when drawnup gradually take up the shockwhen the armature is attracted, obtaining abetter and more reliable action than with the use of a dash-pot. VThe relativeform ofthe outwardlybent portions of the springs 24 is suchl that'when the carbon has been lifted to near its limit the springs will be at their dead-point-that is, not have any tendency Vto draw the carbon down, but;

will be pulled below the dead-point only by the weight of the'carbon, and thus b'ringthesprings in position to drawthe carbondown.

yIt will be observed that Ihavegshow'n vrat-r tached to the outwardly-pressing', spring 21,'

which 1 carries: the clutch -fdog, an almost straight inwardly-pressing springl25, ,'be'nt` outwardly at its lower end, acting as a stop forfthe armature and at the same time aiding in releasing the spring-held dog23.` However,r thisvmay be dispensed with, asthe actionof the springs 2122 Yhas Aproven to ybe 'always certain'. f y

Below the lower position of the springs 21 22 and on the tube 191 screwanut.26,which z may also act as a spreader for said fsprings 2 1 22, or said springs may be prolongedv tolimglobewith its retaining#ringfattached.

. pinge on and bespread `by the heatishield27,

which latter is insulated from and. held f be-y tween the. nut 26above and'afsimilarnut 28 below it, both sc rewedon the brass tube 12.

Closing the bottom of the brass-tube isthe plate 29,. having a central Vtubular "boss-'30,1

which acts to trip spring 25, the lower surface of. this closure acting as atop-'Gaprfor the in ner globe'or bottle, andanadjustable lo wer limit forthe armature.

The heat-'shield 27 is connected tofth'e'outerv globe-support 9, whichconsists of the usual 'f l f rim, t'o which is secured apairjof oppjosi't-elyy 5 l32-,onjthe heat-shield." Theseilocking vareguided in'radial slots 133inthe-globeiring andare themselves provided with slots (shown l in dotte dlines)' n whichareretainin'gsc'rewsV 34, 4on which' the lockingfpiecesi havev radialmotion. Stationary'scre'ws andlockt-nutsr disposed locking-pieces taking over 36 serve gto hold thel devicesy in open-ativepo-` sitiO'n, Whiletheflnger-grips 37fallow-tle trimg v mer tol pull "them :outward,' freleasefthe nose Depending from they heatshieldf27is a rod 39, having negative terminal nuts 40 and prof vided with a slot 41, ending in a circumferential groove 42 near the lower end of saidl rod, the shoulders at the junction of said groove and slot being beveled or rounded, as shown at 43.

upper end of this tube I secure a thumb-,screw 46, provided with a collar 47, which abuts in its outward movement against one or two retaining-pins 48 to prevent the trimmer from unscrewing it too far.vv

The bracket is provided with a socket 49, carrying at its center a lthumb-screw-adj ustedlower-carbon holder 50. In the bottom of the socket is placed the usual air-tight packing 51, upon which thelower end of the bottle rests. These bottles or inner globes often ycrack'f'rornf'the'excessive heat, and I have Over this rod slides atube 44, carrying at its lower end a bracket 45.l In the found that this is due to their being unable to expand when heldin place by the usual thumb-sorews8,;tnd to obviate this I place between said, screws 'and the lower grooved part ofthe bottle a thin sheet of sheet metal' 52, whichmayl1a ve one or more turns, and which is-.sothin that-when the thumb-screws arefscrewed lin it will partly conform to the outline of thelower part of the bottle, yet not iit close thereto' over the; entire surface, thus -allowingth'e met-al stripto give when the bot-y n tle expands'. Thisnieansof holding the end of 4 a bottle'isch'elper than Springs, more easily inserted,lre adi ly replaced, and reliable in itsactionn Y.: vFigq2 shows a modified form in which the 1 1- spoolfbody 12 has aniron head 56,formedin. tf.. `one piecewith ,the core l 57, and a'brasscar- 4bon-guide which passes through the'latter, all securedtogeth'er by's'crews58. f The lowerspool-head lissecured as vbefore describ'ed;' butzinstead of prolon'gingthe spool-'bodyI Yscf- .5 Vcure toits end a conical or aring'piece 59,* j provided'with aiiange' 60, said conical pieceA y threaded'from the iiauge tvio'its'lowerend, saidl conical:guide'-pieoe" being va substitute and; equivaler'l't in itsactionto the ring-regulator;` f 24,'Fig. 1. f vBetween'the flange 60 anda rings f lis heldthe heat-Shield27; The armature' f62*is"tub`l ilarfand provided lat its upper. end withal brass stop 63which may be screwed thereinto permit adjustment, if desired, and

has slots in its lower ejndgin which are secured tion9qa`nd forms they upper-"cap for the loot-y 1.

Atle,itsilower face beinglprovidedwitha cen'i .f tering-"Hangs `for'the bottle,fandgthe'upper :1

ffacefofsaid regulator carries aboss 71, de-` fsig'nedtoact on the spring 67 and release the 4clutch.'l j This clutch passes through a sl'ot72., in thetubell), threaded inthe lowerend of thearmat're. f

, The Voperationwill, be asv followsrfiOircuit".

l innerglobe. 3o bracket is thenloosened and is preventedv l carbon.

being made in the position shown in Fig. l, the solenoid is energized, the armature 18 attracted by the core 14, and being resisted in its motion as soon as the upper end thereof has passed the lower end ofthe tube 16 by the magnetism engendered in said portion of the tube. At the same time the springs 21 22 slide overthe conical or iiaring surfaces of the regulator, are forced inward, grip the carlo bon with increasing strength, and eXert an increasing resistance to the rise of the armature, which is thenr forcedback to proper striking distance by said springs. For adjusting the lower limit of travel of the armature the top plate for the-bottle 29 can be screwed up or down on the lower projecting end of the spool-body, while the upper limit aof travel is similarly adjusted by moving the core 14, with or without the carbon guidezo tube 16, as desiredwhile the clutch is adjustable by means of the regulator 24. In trimming the lock-nuts are loosened, and the trimmer by taking hold of the finger-grips 37 and drawing out the clamps and allowing the z5 outer globe and retaining-ring to drop and hang by the chains which are attached at vone end to the case (not shown) and at the other to said retaining-ring vhas free access to the Thethumb screw 46 on the from `being drawn out of the slot 41 in the rod 39fby reason '..of the collar r47' abutting against the pins 48.* Thisallows the tube 44 u' to drop straight down,ibeing guided by the l `3,5 screw 46, that slides in `the slot and enters the circumferential groove 42. The bracket with the bottle attached can now be swung around 'and thejlamp conveniently trimmed.

- In this form in orderto adjust the grip-regu- 40, lator it-Will be necessary for the trimmer to open the case; but in' theform shown in Fig.V

.2 thisjwill not befnecessary, as everything is accessible froingtheoutside,and below the heat-shield. It. willjbe observed that in this 45 modification the armature and the. parts carried thereby. are free torotate'as well as the y rHaving thus described my invention, what I claim as new. therein, and desireto secure by 1. Inan arc-lamp,a solenoid comprising a non-,magnetic body and lowerhead, an upper y head of magnetic material adjustable on the body, and a coreadj'ustable `within the'` upy5.5 per` end. of saidv body,substantially asset .forth 2, `In an arc-lamp,a` solenoid comprising a f j non-magnetic body and lower head, `a conical `upper .head of ymagnetic.material adj ustably i 6o mounted on, anda coreadjustably mounted g in .said body, in combination witha carbon-r tube adjustably securedr within' said core, substantially as set forth.

f Y In an arc-lamp, a solenoid comprising a non-magnetic body and lower head', a conical.

upper head ofy magnetic material adj ustably mounted on, anda ytubular core adjustably mounted in the upper end of said body; in combination with a carbon guide-tube of magnetic material adjustable in and whose lower end projects below said core, substantially as set forth.

4. In an 'arc-lamp, a solenoid, the body thereof projecting below the lower solenoidr head and threaded, in combination with a ring adjustable on said threaded portion and having a substantially conical bearing-surface, an armature sliding in said body, springs attached to the armature whose free ends slide against the bearing-surface of the ring, substantially as set forth.

5. In an arc-lamp, a solenoid, a conical or iiared bored tube secured to the .end of the spool-body of .the solenoid; in combination with an armature sliding in said body, springs secured thereto and arranged to bear against Vthe conicalwalls of the extended body of the armature, substantially as described.

6. In an arc-lamp, a solenoid,the body thereofv extending below the lower solenoidhead and exteriorly threaded; in combination witha ring in` the Athreaded portion, a tubular armature-spring securedy thereto, a

`bend in said spring arranged to grip the carbon, the free ends of said spring engaging the head slotted and threaded; in combinationv with a tubular armature, a gnide-tube'secured'in the lowerend thereof', springs secured to amoving part and'provided Iwith a bend, the bend of .one of said springs engaging the upper carbon, means adjustable on said. extension Vfor graduating and regulating the vtension of saidsprings, a spreader also adjustablek thereon, means for limiting the drop of the armature and for positively releasing the clutch, substantially as and for thepurpose set forth. f y

9.y In an arc-lamp, solenoid, thebody IOO IIO

thereofextended.below the lower. solenoidhead and threaded, incombination with a' tujbulararinature,l springs securedftliereto,.one of w-hichis bent to'forma clutch, a .stop secured to the spring-clutch, a'plate adj ust-able landfclosing thev lowerend of 3 the spool-body` limitingy the drop of the armature and organized Vto positively release the clutch, sub` stantially as set forth. I

10. Inan arc-lamp', a' solenoid, a conical extension secured tof the end of thespoolbody thereof, an external iiange on said ex- Ato tension, means for securing the heat-shield against said Bange, a plate having a central carbon-passage closing and adjustable on the end ofsaid extension and forming the bottlecap, substantially as and for'the purpose set forth.

y 12. In an arc-lamp, a solenoid, an extension having a conicalrbore and secured to the end of thefsolenoid spool-body; inA combination with a tubular armature,"springs secured thereto at Aone end and lorganized tobear against the eonical'wallsof the extension, a

n spring-clutchengagingthe-carbon'andsecured .tbody7 thereof extended. below'r the lower .so-`

to the armature,` sa`id armaturefand attached parts freeftomove VVvertically and to rotate,l v and means' to` positively ;niove the spring clutch out ofl engagement-With the carbon tially asset forth.

Whatever the degree of.` rotation, 'substan- 13. Inl an arc lamp,arsolenoid,` the spoollenoidK-h'ead andthreaded', a stop on` the'eX-' terior vof, saidfextended portion', 'means for v securing a heatfzshieldagainst saidstop; -a

longitudinally slotted rodidepe'ndi'ng from f said heatfshield, a tube sliding -Qnfsaid rod carrying a bottl`e bracket, and means'for guidf ving the tube AWhile sliding onysaid rod'zorgan- .ized to allow'` revolutiony ofthe bottle'V aft.` the limit of drop, su'bstantiallyiasset forth.4 t 14. In combination with an arc-lamp, a de-j i 'pending terminaljrodjalongitu'dinalslot cut xt herein, a circumferential groove cutat the V end ofsaid slot, artube -telescoping said frod i and carryingabottlebracket, a thumb-screw fin `said tube 'and entering said-"slot and guid-` ling the tube duringitsjdropand limiting it at the groove, substantiallygasset forth. f 15. i In combination With'an arc-lamp', a de:`

' lshoulders"Wherev it fenter'sthe groove, 'ga tube' telescopingfon said rod; fathumb-screw lim itedinits outward-movement dengagingsaid .l slot and securingthetubeilto saidfrodl and del i, signed' l tolenter;the .Gir'cumferentialjgroove vz i at the" 'end to saidfsha-"substantially as^""set.`

' vrtainingfscreWsfthetfeiri and asheet-metal strip between said screws, an d the" foot vofthe bottle, yfor the *purposefsetfforth; Q i 1 1 7. Ihe combination with an arclamp and" lpurposes set forth.

sai'd'core, substantially as set forth.

lconicalupper head adjustable on `said body,

vture projecting below the lower'solenoid lbear againstsaid surface, substantially as of springs secured-to a dgorganizedf the frise of ,said armature., and'v bear. ainst Ainner conical surface-,of the guide carbon from saidspr iallyconicalguide p .and held to' a part thereof; anv armature slid able "in the 'Solened" "az-pail" "0f outwardly vspreading sp ringssecuredv to said 4armature .armature during. its Averti stantially as set forth@ efras" Y bottle-bracket, of asocket on said-bracket, a loose sheet-metallining therefor,and retaining-screws arranged to force the sheet-metal' lining against the bottle, substantially as and for the purposes set forth. f

18. The combination with an arc-lamp', of a heat-shield verticallyadjustable and sefcured thereto, a liange on the heat-shield', a globe-supporting ring, devices radiallyvslid'- 75 `r able in said ring and arranged to secure the ring to said'iange, and means for locking the devices in closed position?.I substantially as set forth. e

` 19. The combination with anarc-lamp and 8o an adjustable heat-shield, of a Iiange on said shield, a globe-ring radially slotted,.locking pieces slotted and slidable in said slots and resting on the upper face of the flange, screws y passingthrough the slots in the-locking-pieces,l 85 and means for securing the locking devices in closedL position, substantially as and for the 20; In an arc-lamp, lncombination-With the solenoid'and its core, of a carbon guide-tube of magnetic material adjustably secured inL l21.; In an arc-lamp, a solenoid comprising 1a non-magnetic body and lower -head,van'd a 1,95 c in combination with an armature-shorter than L the' distance 4between the heads, substantially asset forth. Y

v22.*In an arcture slidable therein,"springs on said lamp, a solenoidfan Y 3'I O'O lhe al substantially conical.. or' flaring surface ,se cured'to the spool'said Vs iprings organized o'v forth.v` ,i s v '23; In an arclam'pa solenoid,y asubstA tiallyconical guide-piece vbelow'the soleno an armature'slidablei thelsolenoid- Va pai esist Sad guide-piece,andgconstructedt grip'ndto releaseV the carbon,v substantially as @et forth A 1 f 24. In

tially conicalguide-piecebelow the solenoid an armature -slidablein` hesolenoid, a ten sionfspringand a carbongripping spring',v

euredltosaid armature;bothfbearingzon' adjustable means fonpositively asing th ajsub forth.y 1 v25; `Iny an arc-1a below vkthe one of s'aidsprings, forming a carbon-grip, and

,bothv organized toslideon the conical sur fa'ce,.f

26. In an aro-lamp, a, solenoid, an extension of the solenoid-body below the lower solenoid-head, in combination with an armature, a carbon-clutch and springs secured to said armature and coperating with the extension of the solenoid-body to operate the clutch, substantially as set forth.

27. In combination with an arc-lamp and bottle-bracket, of a socket for the bottle, re

Io taining-screws therein and a coil of sheet metal between said screws and the foot of the bottle, for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

JOHN HERRICHT.

Witnesses:

HENRY ORTH, Jr., GEO. EAFRECH. 

